EP0924106A1 - Procédé pour donner un aspect métallique vieilli à une pièce moulée en matière thermoplastique - Google Patents
Procédé pour donner un aspect métallique vieilli à une pièce moulée en matière thermoplastique Download PDFInfo
- Publication number
- EP0924106A1 EP0924106A1 EP98403016A EP98403016A EP0924106A1 EP 0924106 A1 EP0924106 A1 EP 0924106A1 EP 98403016 A EP98403016 A EP 98403016A EP 98403016 A EP98403016 A EP 98403016A EP 0924106 A1 EP0924106 A1 EP 0924106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polished
- zones
- thermoplastic
- less
- areas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 19
- 229920001169 thermoplastic Polymers 0.000 title claims description 8
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 8
- 239000002966 varnish Substances 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 241001122315 Polites Species 0.000 claims 1
- 238000001883 metal evaporation Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000009757 thermoplastic moulding Methods 0.000 abstract 1
- 238000007740 vapor deposition Methods 0.000 abstract 1
- 238000001465 metallisation Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/04—Modelling plastic materials, e.g. clay
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F9/00—Designs imitating natural patterns
- B44F9/10—Designs imitating natural patterns of metallic or oxidised metallic surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0022—Bright, glossy or shiny surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0024—Matt surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/722—Decorative or ornamental articles
Definitions
- the present invention relates to a method to give an old metallic look to a room molded in thermoplastic.
- thermoplastic metallized gold, silver, copper, bronze, brass, etc.
- the objective of metallization is to obtain an appearance homogeneous matt or gloss over the whole part processed.
- a classic and efficient process of metallization includes the stages of evaporation of a very thin layer of aluminum on the outer surface of the part in an empty bell (sublimation of aluminum) then applying a layer of varnish by spraying, this layer of varnish having for purpose of protecting the aluminum layer deposited by chemical evaporation, but also to give the hue desired (gold, silver, etc.) for metallization.
- the invention achieves its object thanks to a process comprising the usual stages of evaporation direct of metal on the external surface of the part then applying a layer of varnish, characterized in that, prior to the two said steps, we have made said exterior surface heterogeneous, with well polished appearance areas and less appearance areas polished.
- a process comprising the usual stages of evaporation direct of metal on the external surface of the part then applying a layer of varnish, characterized in that, prior to the two said steps, we have made said exterior surface heterogeneous, with well polished appearance areas and less appearance areas polished.
- the process of the invention goes to against the natural gait of man of the craft, which would have been to start from a metallic piece brilliant classic and transform its appearance exterior, for example by applying layers of additional varnishes.
- the process of the invention occurs upstream of the preparation of the piece and replaces the first application of varnish or the first polishing of the conventional process.
- said heterogeneous external surface is obtained directly during molding by using a mold, the surface of which has well-polished (glossy) zones and less polished (satin-brushed) zones, and use is made of an unfilled thermoplastic, in particular an unfilled polypropylene.
- the satin areas of the mold will create areas of aged metallic appearance on the final molded part, while the shiny areas will create areas of traditional shiny metallic appearance. It is possible, according to this process, to produce contrasts between parts of different appearance (for example a background of shiny appearance with an engraving of mat appearance, or vice versa).
- the advantage of this embodiment is that it is perfectly controllable and reproducible.
- the satin appearance of certain parts of the mold can be given by several methods, all leading to a roughness whose arithmetic mean difference R a is preferably between 0.4 and 18 ⁇ m .
- said heterogeneous outer surface is obtained by molding a thermoplastic material loaded (especially with barium sulfate) in a glossy polished mold.
- a thermoplastic material loaded especially with barium sulfate
- some charged thermoplastics such as density 2 polypropylene (polypropylene loaded with barium sulfate)
- the distribution of the matt areas and brilliant is not controllable and reproducible, but maybe it just contributes to realism increased of the "old metal" aspect obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims (7)
- Procédé pour donner un aspect métallique vieilli à une pièce moulée en matière thermoplastique, comportant les étapes d'évaporation directe de métal sur la surface extérieure de la pièce puis d'application d'une couche de vernis, caractérisé en ce que, préalablement aux deux dites étapes, on a rendu ladite surface extérieure hétérogène lors du moulage, avec des zones d'aspect bien poli et des zones d'aspect moins poli.
- Procédé selon la revendication 1, caractérisé en ce que ladite surface extérieure hétérogène est obtenue lors du moulage par utilisation d'un moule dont la surface présente des zones bien polies et des zones moins polies.
- Procédé selon la revendication 2, caractérisé en ce que les zones moins polies présentent un écart moyen arithmétique de rugosité Ra est de préférence compris entre 0,4 et 18 µm.
- Procédé selon l'une quelconque des revendications 2 ou 3, caractérisé en ce qu'on utilise une matière thermoplastique non chargée, notamment un polypropylène non chargé.
- Procédé selon la revendication 1, caractérisé en ce que ladite surface extérieure hétérogène est obtenue par moulage d'une matière thermoplastique chargée dans un moule poli.
- Procédé selon la revendication 5, caractérisé en ce que la matière thermoplastique est un polypropylène de densité 2.
- Procédé selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que la charge de la matière thermoplastique est le sulfate de baryum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9716018A FR2772393B1 (fr) | 1997-12-17 | 1997-12-17 | Procede pour donner un aspect metallique vieilli a une piece moulee en matiere thermoplastique |
| FR9716018 | 1997-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0924106A1 true EP0924106A1 (fr) | 1999-06-23 |
| EP0924106B1 EP0924106B1 (fr) | 2002-03-13 |
Family
ID=9514733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19980403016 Expired - Lifetime EP0924106B1 (fr) | 1997-12-17 | 1998-12-02 | Procédé pour donner un aspect métallique vieilli à une pièce moulée en matière thermoplastique |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0924106B1 (fr) |
| DE (1) | DE69804194T2 (fr) |
| ES (1) | ES2174406T3 (fr) |
| FR (1) | FR2772393B1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1548687A (fr) * | 1967-10-27 | 1968-12-06 | ||
| FR1582484A (fr) * | 1967-09-30 | 1969-09-26 | ||
| JPS6121143A (ja) * | 1984-07-10 | 1986-01-29 | Karupu Kogyo Kk | 複合樹脂組成物 |
| FR2735075A1 (fr) * | 1995-06-07 | 1996-12-13 | Ams Europ | Procede pour conferer un aspect metallique patine a une piece en matiere plastique. |
-
1997
- 1997-12-17 FR FR9716018A patent/FR2772393B1/fr not_active Expired - Fee Related
-
1998
- 1998-12-02 DE DE1998604194 patent/DE69804194T2/de not_active Expired - Fee Related
- 1998-12-02 EP EP19980403016 patent/EP0924106B1/fr not_active Expired - Lifetime
- 1998-12-02 ES ES98403016T patent/ES2174406T3/es not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1582484A (fr) * | 1967-09-30 | 1969-09-26 | ||
| FR1548687A (fr) * | 1967-10-27 | 1968-12-06 | ||
| JPS6121143A (ja) * | 1984-07-10 | 1986-01-29 | Karupu Kogyo Kk | 複合樹脂組成物 |
| FR2735075A1 (fr) * | 1995-06-07 | 1996-12-13 | Ams Europ | Procede pour conferer un aspect metallique patine a une piece en matiere plastique. |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE WPI Section Ch Week 8611, Derwent World Patents Index; Class A23, AN 86-071985, XP002075507 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0924106B1 (fr) | 2002-03-13 |
| ES2174406T3 (es) | 2002-11-01 |
| FR2772393A1 (fr) | 1999-06-18 |
| DE69804194D1 (de) | 2002-04-18 |
| DE69804194T2 (de) | 2002-10-24 |
| FR2772393B1 (fr) | 2000-02-04 |
| HK1021963A1 (en) | 2000-07-21 |
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